Mixer



FIG. 1 is a front perspective view of a mixer showing my new design;

FIG. 2 is a right side elevational view thereof; the left side being a mirror image;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

The broken lines showing an exemplar pull tab, handle recess, and mixing shaft engaging structure are for illustrative purpose only and form no part of the claimed design. 

The ornamental design for a mixer, as shown and described. 